hot fix: config.json

Quick oversight, I missed a `,` in the json!

config.json

@@ -28,6 +28,6 @@
   "transformers_version": "4.41.2",
   "use_cache": true,
   "use_sliding_window": false,
-  "is_causal": false
+  "is_causal": false,
   "vocab_size": 151646
 }